Setting properties outside of the WAR

[Ritchie Young]

Hi,   Is there a standard way to set a property for a web-app other than in the WEB-INF/web.xml ?   I would like to copy my web app between several machines each of which requires some unique settings. Previously I've been doing this by setting the TOMCAT_OPTIONS="-Dprops=my.properties" before running Tomcat but I thought there must be a nicer way of doing it than that.   Thanks Ritchie